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Diego Fidel Mazzella

Kingdom JJ

W–L
8–8
Won and lost rating-eligible matches in the past 12 months.
Gi
1,339
Rating based on Gi matches in the past 12 months.
No-Gi
1,309
Rating based on No-Gi matches in the past 12 months.
Current form
4–6
Results from the ten most recent rating-eligible matches.
Opponents
10
Unique opponents faced in rating-eligible matches in the past 12 months.

Honours

Medals and placements

Gold
10
Silver
11
Bronze
4
Total medals
25
Events with results
16

Full career record

Wins
42
Losses
30
Matches
72
Win rate
58.3%

Ways of winning

Submission
19
Points
17
Decision
3
Disqualification
1

Personal records

Longest winning streak
7
Longest submission streak
3
Longest gold streak
1
Largest recorded points win
19–0

Recent recorded placements

  2. NAGA Germany Grappling Championship

    DE Event record 0–8

    • Children No-Gi (Male) / Expert / 45 - 49.9 / 10-11 years
    • Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
    • Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years

12-month performance profile

How the results were achieved

Past 12 months
Current win streak
4
Unique opponents
10
Distinct events
4

Ways of winning

  • Submission 2 25%
  • Points 4 50%
  • Decision 1 13%
  • Other recorded result 1 13%

Gi versus No-Gi

Gi

Rating
1339
Record
4–3
Win rate
57%
Submission share
50%

No-Gi

Rating
1309
Record
4–5
Win rate
44%
Submission share
0%

Win quality

Grouped by pre-match win probability. This provides context and does not award an extra rating bonus.

As underdog 0–0 Less than 35% expected win probability before the match.
Even match 0–0 Between 35% and 65% expected win probability before the match.
As favourite 0–0 More than 65% expected win probability before the match.

Development

Rating and development

The same published rating, supported by trend, opponent strength and evidence quality.

Current rating
1,390
Change over 90 days
-49
Highest rating in 12 months
1,442
Performance versus expectation
+4.0 pp
Schedule strength
Top 6%
Average opponent rating
1,420
Weighted win rate
51%
Expected win rate
47%
Repeat-opponent share
38%
Effective evidence
12.3
Confidence
92/100

Opponents

Opposition and rivalries

The strongest recorded win, rematches and opponents faced repeatedly.

Rematches 27–21 27–21 across 48 rematches against 15 repeat opponents.

Top 10 highest-ranked defeated opponents

Past 12 months

  1. #459 David Lazic · FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Pts 16–0
  2. #584 Illia Basha · GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Pts 19–0 Earlier · Sub 03:07 10–0 June 27, 2026 · GERMAN NATIONAL OPEN CHAMPIONSHIP 2026

Full career

  1. #17 Richard Finn Gemmecker · FRANKFURT WINTER OPEN CHAMPIONSHIP 2025 I EUROPEAN CUP Pts 7–0 Earlier · Pts 2–0 February 22, 2025 · FRANKFURT WINTER OPEN CHAMPIONSHIP 2025 I EUROPEAN CUP
  2. #157 Leon Erkibaev · GERMAN NATIONAL OPEN CHAMPIONSHIP 2024 Pts 5–0 Earlier · Sub 00:59 5–0 June 15, 2024 · GERMAN NATIONAL OPEN CHAMPIONSHIP 2024
  3. #301 Rafael Gehweiler · FRANKFURT SPRING OPEN CHAMPIONSHIP I European Cup Sub 01:46 9–0 Earlier · Sub 01:16 11–2 June 11, 2023 · Southside Battle Trials 2023 - Kinder und Jugendliche
  4. #459 David Lazic · FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Pts 16–0
  5. #584 Illia Basha · GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Pts 19–0 Earlier · Sub 03:07 10–0 June 27, 2026 · GERMAN NATIONAL OPEN CHAMPIONSHIP 2026

Rivals

Opponent Head-to-head record Matches
Illia Basha 4–0 4

Around this athlete

Athlete Rank Rating
Gabriel Garfinkiel #440 1,390
Diego Fidel Mazzella #441 1,390
Fynn Quilitz #442 1,389

Recent tournaments

Calculation details

Rating breakdown for the past 12 months

See the published month-end rating and the rating-eligible matches added in each month. Open a month for details.

August 2026 No new matches Change -2 Rating 1,390

Rating-period composition

Rating matches
16 0
Record
8–8 Previous month 8–8
Opponents
10 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

July 2026 No new matches Change -1 Rating 1,392

Rating-period composition

Rating matches
16 0
Record
8–8 Previous month 8–8
Opponents
10 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

June 2026 4 new matches · 3 left period Change +41 Rating 1,393

Rating-period composition

Rating matches
16 +1
Record
8–8 Previous month 6–9
Opponents
10 -2
Events
4 0

3 older matches left the 12-month period: 2 won and 1 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
June 27, 2026 Illia Basha
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / Grey / 12-13 years / -45 kg
Method Disqualification 00:20 0–0
Marginal influence +11
Win
June 27, 2026 Illia Basha
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys No-Gi (under 16 y.o.) / Grey / 12-13 years / -45 kg
Method Points 04:00 19–0
Marginal influence +11
Win
June 27, 2026 Illia Basha
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Submission 03:07 10–0
Marginal influence +10
Win
June 27, 2026 Illia Basha
GERMAN NATIONAL OPEN CHAMPIONSHIP 2026 Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
Method Points 04:00 6–0
Marginal influence +10
May 2026 6 new matches · 4 left period Change -64 Rating 1,352

Rating-period composition

Rating matches
15 +2
Record
6–9 Previous month 8–5
Opponents
12 +1
Events
4 0

4 older matches left the 12-month period: 2 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
May 23, 2026 Andre Zaytsev
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 45 - 49.9 / 10-11 years
Method Points 04:00 0–6
Marginal influence -16
Loss
May 23, 2026 Murzin Nazar
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 45 - 49.9 / 10-11 years
Method Points 04:00 4–6
Marginal influence -13
Loss
May 23, 2026 Easa Adam
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Method Decision 02:33 0–6
Marginal influence -10
Loss
NAGA Germany Grappling Championship Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Method Submission 00:29 0–6
Marginal influence -7
Loss
NAGA Germany Grappling Championship Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Method Decision 0–0
Marginal influence -1
Loss
May 23, 2026 Easa Adam
NAGA Germany Grappling Championship Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
Method Submission 01:52 0–7
Marginal influence -7
April 2026 4 new matches Change +20 Rating 1,416

Rating-period composition

Rating matches
13 +4
Record
8–5 Previous month 6–3
Opponents
11 +4
Events
4 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Loss
April 18, 2026 Felix Geling
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Absolute Division GI
Method Points 04:00 6–10
Marginal influence -7
Win
April 18, 2026 David Lazic
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
Method Points 03:00 16–0
Marginal influence +12
Loss
April 18, 2026 Nuaym Nguyen
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
Method Submission 01:55 0–5
Marginal influence -7
Win
April 18, 2026 Elias Englert
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
Method Submission 00:21 6–0
Marginal influence +11
March 2026 No new matches Change +1 Rating 1,396

Rating-period composition

Rating matches
9 0
Record
6–3 Previous month 6–3
Opponents
7 0
Events
3 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

February 2026 No new matches · 4 left period Change -43 Rating 1,395

Rating-period composition

Rating matches
9 -4
Record
6–3 Previous month 8–5
Opponents
7 -2
Events
3 -1

4 older matches left the 12-month period: 2 won and 2 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

January 2026 No new matches Change 0 Rating 1,438

Rating-period composition

Rating matches
13 0
Record
8–5 Previous month 8–5
Opponents
9 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

December 2025 No new matches Change 0 Rating 1,438

Rating-period composition

Rating matches
13 0
Record
8–5 Previous month 8–5
Opponents
9 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

November 2025 No new matches · 7 left period Change -4 Rating 1,438

Rating-period composition

Rating matches
13 -7
Record
8–5 Previous month 11–9
Opponents
9 -2
Events
4 -1

7 older matches left the 12-month period: 3 won and 4 lost. The rating is then recalculated across the full network, so the monthly change is not a sum of separate deductions.

October 2025 2 new matches Change +34 Rating 1,442

Rating-period composition

Rating matches
20 +2
Record
11–9 Previous month 9–9
Opponents
11 +1
Events
5 +1

New rating matches

This is a current what-if estimate: roughly how much the current rating changes when this match is omitted. These values cannot be added and therefore do not together explain the monthly change.
Win
October 18, 2025 Daniel Geneberg
FRANKFURT FALL OPEN 2025 I EUROPEAN CUP Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Points 03:00 2–0
Marginal influence +13
Win
October 18, 2025 Daniel Geneberg
FRANKFURT FALL OPEN 2025 I EUROPEAN CUP Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
Method Decision 04:00 15–0
Marginal influence +14
September 2025 No new matches Change +1 Rating 1,408

Rating-period composition

Rating matches
18 0
Record
9–9 Previous month 9–9
Opponents
10 0
Events
4 0

No matches were added or left the period. The change comes from the monthly revaluation of opponents across the full network.

Relevant matches
12.3
Official ranking percentile
Top 30%
Performance
4.0 pp above expectation

12.3 weighted matches against 10 different opponents across 4 events

Weighted win rate
51.4%
Expected win rate
47.5%
Average opponent rating
1,420
Repeated-opponent share
37.5%
Network connectivity
87.6%

Classification evidence

Why U14?

Within the published period from 2025-09-01 through 2026-08-31, only competition ages recorded at events in the calculation year determine this outcome, with at most one vote per event. Without such an age, the most recent unambiguous earlier competition age is projected to the calculation year; bracket evidence is the final fallback. The newest evidence breaks a tie.

Evidence outcome

  • U14 3 event votes Selected outcome

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
U14 · Counts
Boys No-Gi (under 16 y.o.) / Grey / 12-13 years / -45 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Competition age 12
  • Registered age: u14
  • Source category: u14
NAGA Germany Grappling Championship
U14 · Counts
Children Gi (Male) / Expert / 45 - 49.9 / 10-11 years
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Children No-Gi (Male) / Expert / 45 - 49.9 / 10-11 years
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
  • Competition age 12
  • Registered age: u12
  • Source category: u12
FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
U14 · Counts
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Competition age 12
  • Registered age: u12
  • Source category: u12
Boys Absolute Division GI
  • Competition age 12
  • Registered age: u18
  • Source category: u18
FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
Does not count
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Competition age 11
  • Registered age: u12
  • Source category: u12

Classification evidence

Why ≤ 38 kg?

This outcome uses at most one unambiguous upper weight limit per completed ranking event from 2025-09-01 through 2026-08-31. Only the three most recent eligible events are considered, and the lightest verified upper limit is selected. A higher division is not treated as measured body weight.

Evidence outcome

  • ≤ 38 kg 1 competition event Selected outcome
  • ≤ 42 kg 1 competition event
  • ≤ 45 kg 1 competition event

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 45 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Grey / 12-13 years / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
≤ 45 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Registered weight class: -45 kg
  • Source competition limit: -45 kg

2 matches in the rating period

NAGA Germany Grappling Championship
Does not count
Children Gi (Male) / Expert / 45 - 49.9 / 10-11 years
  • Registered weight class: 45 - 49.9
  • Source competition limit: 45 - 49.9

No matches in the rating period · no valid weight evidence

NAGA Germany Grappling Championship
≤ 50 kg · Does not count
Children No-Gi (Male) / Expert / 45 - 49.9 / 10-11 years
  • Registered weight class: 45 - 49.9
  • Source competition limit: 45 - 49.9

2 matches in the rating period · conflicting upper weight limits make this event ambiguous

NAGA Germany Grappling Championship
≤ 40 kg · Does not count
Children Gi (Male) / Expert / 35 - 39.9 / 10-11 years
  • Registered weight class: 35 - 39.9
  • Source competition limit: 35 - 39.9

2 matches in the rating period · conflicting upper weight limits make this event ambiguous

NAGA Germany Grappling Championship
≤ 40 kg · Does not count
Children No-Gi (Male) / Expert / 35 - 39.9 / 10-11 years
  • Registered weight class: 35 - 39.9
  • Source competition limit: 35 - 39.9

2 matches in the rating period · conflicting upper weight limits make this event ambiguous

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
≤ 38 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Registered weight class: -38 kg
  • Source competition limit: -38 kg

1 match in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
Does not count
Boys Absolute Division GI

1 match in the rating period · weight class could not be normalized reliably

FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
≤ 42 kg · Counts as a competition event
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

1 match in the rating period

FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
≤ 42 kg · Counts as a competition event
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Registered weight class: -42 kg
  • Source competition limit: -42 kg

1 match in the rating period

Classification evidence

Why Yellow?

This outcome uses the belt category of every rating-eligible match from 2025-09-01 through 2026-08-31. The most-fought category is selected; the newest evidence breaks a tie.

Evidence outcome

  • yellow 7 matches in the rating period Selected outcome
  • grey 2 matches in the rating period

Registrations and outcomes

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
grey · Counts as a match
Boys No-Gi (under 16 y.o.) / Grey / 12-13 years / -45 kg
  • Source belt category: grey

2 matches in the rating period

GERMAN NATIONAL OPEN CHAMPIONSHIP 2026
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 12-13 years / -45 kg
  • Source belt category: yellow

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
yellow · Counts as a match
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Source belt category: yellow

2 matches in the rating period

FRANKFURT SPRING OPEN CHAMPIONSHIP 2026 I EUROPEAN CUP
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -38 kg
  • Source belt category: yellow

1 match in the rating period

FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
yellow · Counts as a match
Boys No-Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Source belt category: yellow

1 match in the rating period

FRANKFURT FALL OPEN 2025 I EUROPEAN CUP
yellow · Counts as a match
Boys Gi (under 16 y.o.) / Yellow / 10-11 years / -42 kg
  • Source belt category: yellow

1 match in the rating period